Adjustable work support



Patented Aug. 25, 1925.

UNITED STATES HIRALT DAVIS, OF CAIVIDEN, NEW JERSEY.

ADJUSTABLE WORK SUPPORT.

Application filed October 11, 1923. Serial No. 667,821.

To all lwhom it may concern:

Be it known that I, l-IRAM Davis, a citizen of the United States, and aresident of Camden, in the county of Camden and State of New Jersey,have invented an lmprovement in Adjustable Vork Supports, of which thefollowing is a specification.

My invention relates to work supports, more particularly supports whichare adapted for supporting a wheel in position to be operated upon by 'adrill press or other like machine.

One of the objects is to provide a support which is adjustable wherebywheels of different sizes can be positioned and supported in operativerelation to the machine which is to operate upon the same.

A further object of my invention is to provide means whereby one side ofthe support may be adjusted independently of the other so as toaccommodate it to different conditions of the work or so as toaccurately present the work to the tool or machine operating thereon.

Other objects and advantages of my invention will be pointed out in thedetailed description thereof which follows or will be apparent from suchdescription.

In order that my invention may be more readily understood and itspractical advantages fully appreciated reference may be had to theaccompanying drawing in which I have illustrated one form of mechanicalembodiment of support embodying my invention. However, it will beunderstood that changes in the details of construction may be madewithin the scope of the claim without departing from my invention.

In the drawing:

Fig. l is a view in side elevation of a work support embodying myinvention showing a wheel supported thereby and also showing in sideelevation a drill press which is adapted to operate upon the work;

Fig. 2 is a view partly in vertical section and partly in frontelevation of the said support; and

Fig. 3 is a view in front elevation of the rear member of the worksupporting means.

Referring to the drawing:

l designates a post or standard upon which the drill press 2, or othersimilar machine is supported and upon which a portion or element of thework support is supported.

3 and t designate two couples of brackets or bars to the outer ends ofwhich one side 5 of the support is detachably secured by means of theremovable pins 6 and 7. The opposite lower edges of the member 5 are cutaway as shown in the drawing and the reduced lower end portion thusformed is situated between the outer forward ends of the brackets orbars 3. The pin 6 passes through openings through the outer end portionsof the said brackets or bars 3 and through an opening in the lower endportion of the member 5. Likewise the opposite upper edge portions ofthe member 5 are cut away to produce a reduced upper end portion whichis situated between the outer ends of the upper brackets or bars 4C. Thepin 7 passes through openings through the outer end portions of the saidbars and through the said reduced upper end portion, as shown. It isapparent that the pins 6 and 7 may be removed to remove the part orelement 5 of the support, if desired. As shown in the drawing, the part5 is provided with a plurality of holes l0 arranged lengthwise. thereoffor the reception of the inner end portion of a supporting shaft or rodll upon which the wheel l5 is supported, the said supporting rod orshaft l1 passing through the central opening of the hub provided for thespindle of an axle. In the construction as shown it will be noted thatthe opening through the hub is cylindrical, but as will be understood,these hub openings are frequently and perhaps for the most part oftruncated cone shape or tapered. In the construction as shown the rim isshown upon the wheel and holes may be drilled thereinto, if desired, bythe drill of the drill press 2. However, the device is used principallyfor tenoning or forming the reduced outer end portions upon the spokeswhich enter holes previously formed in the rims or fellies. When usedfor the latter purpose a suitable cutting device is substituted for thedrill shown in the drill press upon the drawing.

The opposite end of the shaft or rod 11 is supported in a centralopening 20 in a cross head 21, the latter comprising a metallic portion22 having screw threaded openings 23 therein in alinement with theopenings 2l in the remaining wooden portion of the said cross' head 2l.The two parts of the cross head are secured and held together by meansof the bolts and nuts 25. Adjusting screw threaded rods 26 extendthrough the openings 23 and 2li and are in screw threaded engagementwith the screw threaded openings 23. rlhe lower ends or the scren7threaded odjusting` rods 2o rest .in sockets torined in the upper sideol' o plete 28 secured to zi hase 29 mounted upon any suitable support.rEhe ripper end portions of the serew threaded adjusting rods 26 extendthrough the top cross har 30 oli in inverted lil-shaped ineniiier Si.,consisting; preferably or e lient n'ietzil har, shovvn. The lower endsel" the opposite sides of the seid U-shaped ineinher :1re oentdownwardly, es indicated zit 32, and 'o secured to the hase 2C hysierenv liolts 33. To prevent upward inoveiiient et the adjusting screwthree ded 'rods l5 have provided` the collars 235 thereon in'nnediste yunderneath the cross her 30. The iiuper e nds ot tl e :idjusting screwthreaded rods ure provided with crenlr handles hy ineens ot which theseid adjusting roes 24S inny loe tured siinulteneousl;T so ss to reiseor lower the cross head 2l.

rl`he inner' end portion ot the Wheel supporting` shaft or rod il indyhe placer in any one of the series oit' holes il) in the meinber 5 undthe cross heed 2l nitty he then edjusted sov as to adjust the wheel intoproper relation With respect to the tool or cutt' ej device which isadapted to operate upon e rim of a Wheel or upon the outer ends o' thespokes upon which the seid rini is adepted to he secured and supported.

lf it should be that the title spindle opening through the huh should heoi truncated cone slnipe instead of cylindrical es shomi it wouldheeoine necessary to odj ust the cross heed 2l either up or down so esto place the spokes, assuming that the outer ends thereoit' are to betenoned, in alineinent With the like roi' the puriose ot performingoperot the spokes.

in 'i thus described in)Y invention, what i eterni end desire to secureby Let- 7 w JY iid in parallel relation to the 1 heed having openingstherethrough through which the smid screw threaded rods e'tend and withwhich the rods lieve screiv threaded engagement, and the :eid cross heedhaving u horizontal eiiingv theethroughv means wher-ehi7 the l screwthreaded rods nitty he rotated to client vertical :idj stinents oit theseid cross houd, :ind n ivorli supporting; bar extending; into theopening in seid cross heed and into one ot' the openings oi" the saidvertical lmr.

lu testimony that l clziiin the VAroregoing in)v invention? l havehereunto signed my neme this 5th dey of (Bomber, 1923.

HRAM LAVIS.

